2021年5月19日 星期三

week13

 

#include <opencv/highgui.h> 
#include <opencv/cv.h>
#include <GL/glut.h>
GLuint id1, id2; 
int myTexture(char * filename)
{
    IplImage * img = cvLoadImage(filename); 
    cvCvtColor(img,img, CV_BGR2RGB); 
    glEnable(GL_TEXTURE_2D); 
    GLuint id; 
    glGenTextures(1, &id); 
    glBindTexture(GL_TEXTURE_2D, id); 
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);
    return id;
}
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glBindTexture(GL_TEXTURE_2D, id1);
    glutSolidTeapot(0.3);

    glBindTexture(GL_TEXTURE_2D, id2);
    glBegin(GL_POLYGON);
        glTexCoord2f( 0, 0 ); glVertex2f( -1, -1 );
        glTexCoord2f( 0, 1 ); glVertex2f( -1, +1 );
        glTexCoord2f( 1, 1 ); glVertex2f( +1, +1 );
        glTexCoord2f( 1, 0 ); glVertex2f( +1, -1 );
    glEnd();
    glutSwapBuffers();
}
int main(int argc, char** argv)
{
    glutInit( &argc, argv );
    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH );

    glutCreateWindow(" Week13 ");
    glutDisplayFunc(display);

    id1 = myTexture("Diffuse.jpg");
    id2 = myTexture("bg.jpg");
    glEnable(GL_DEPTH_TEST);
    glutMainLoop();
}
1-1. hackmd.io/@jsyeh/opengl 剪貼範例
1-2 OpenCV  安裝 Setting/Compiler
Search directories/Compiler C:\OpenCV2.1\include 
Search directories/Linker C:\OpenCV2.1\lib
;inker setting cv210 cxcore210 highgui210
1-3 把貼圖放入main.cpp
1-4 圖檔放入 桌面/freeglut/bin
2-1 把 freeglut\bin 的 freeglut.dll 複製到08160572_week13
    Diffuse.jpg 及 bg.jpg 移到08160572_week13
2-2 用 Notepad++把08160572_week13\08160572_week13.cbp 打開
    兩個working_dir 要改成 "."  再存檔
2-3 CodeBlocks會出現 Reload按Yes

3-1 source.zip (glm.h glm.c--->glm.cpp, transformation.c)
3-2  gundam還沒切開.zip Gundam.obj Gundam.mtl Diffuse.jpg 加入目錄
3-3  把 glm.cpp 加入程式 Add File
3-4 複製transformation.c的程式
#include <opencv/cv.h>
#include <GL/glut.h>
#include "glm.h"
GLMmodel* pmodel = NULL;
void
drawmodel(void)
{
    if (!pmodel) {
pmodel = glmReadOBJ("Gundam.obj");
if (!pmodel) exit(0);        (改檔名)
glmUnitize(pmodel);
glmFacetNormals(pmodel);
glmVertexNormals(pmodel, 90.0);
    }

    glmDraw(pmodel, GLM_SMOOTH | GLM_TEXTURE);
}                                                                (GLM_MATERIAL)
GLuint id1, id2; 
int myTexture(char * filename)
{
    IplImage * img = cvLoadImage(filename); 
    cvCvtColor(img,img, CV_BGR2RGB); )
    glEnable(GL_TEXTURE_2D); 
    GLuint id;
    glGenTextures(1, &id); 
    glBindTexture(GL_TEXTURE_2D, id); 
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);
    return id;
}
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glBindTexture(GL_TEXTURE_2D, id1);
    glutSolidTeapot(0.3);

    glBindTexture(GL_TEXTURE_2D, id2);
    glBegin(GL_POLYGON);
        glTexCoord2f( 0, 0 ); glVertex2f( -1, -1 );
        glTexCoord2f( 0, 1 ); glVertex2f( -1, +1 );
        glTexCoord2f( 1, 1 ); glVertex2f( +1, +1 );
        glTexCoord2f( 1, 0 ); glVertex2f( +1, -1 );
    glEnd();
    glutSwapBuffers();
}
int main(int argc, char** argv)
{
    glutInit( &argc, argv );
    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH );
    glutCreateWindow(" Week13 ");
    glutDisplayFunc(display);

    id1 = myTexture("Diffuse.jpg");
    id2 = myTexture("bg.jpg");
    glEnable(GL_DEPTH_TEST);
    glutMainLoop();
}
3-5-1 茶壺改成鋼彈的模型
 註解glutSolidTeapot(0.3); 加入drawmodel();
#include <opencv/cv.h>
#include <GL/glut.h>
#include "glm.h"
GLMmodel* pmodel = NULL;
void
drawmodel(void)
{
    if (!pmodel) {
pmodel = glmReadOBJ("Gundam.obj");
if (!pmodel) exit(0);       
glmUnitize(pmodel);
glmFacetNormals(pmodel);
glmVertexNormals(pmodel, 90.0);
    }

    glmDraw(pmodel, GLM_SMOOTH | GLM_TEXTURE);
}                                                                
GLuint id1, id2; 
int myTexture(char * filename)
{
    IplImage * img = cvLoadImage(filename); 
    cvCvtColor(img,img, CV_BGR2RGB); )
    glEnable(GL_TEXTURE_2D); 
    GLuint id;
    glGenTextures(1, &id); 
    glBindTexture(GL_TEXTURE_2D, id); 
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);
    return id;
}
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glBindTexture(GL_TEXTURE_2D, id1);
    drawmodel();///glutSolidTeapot(0.3); 

    glBindTexture(GL_TEXTURE_2D, id2);
    glBegin(GL_POLYGON);
        glTexCoord2f( 0, 0 ); glVertex2f( -1, -1 );
        glTexCoord2f( 0, 1 ); glVertex2f( -1, +1 );
        glTexCoord2f( 1, 1 ); glVertex2f( +1, +1 );
        glTexCoord2f( 1, 0 ); glVertex2f( +1, -1 );
    glEnd();
    glutSwapBuffers();
}
int main(int argc, char** argv)
{
    glutInit( &argc, argv );
    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH );
    glutCreateWindow(" Week13 ");
    glutDisplayFunc(display);

    id1 = myTexture("Diffuse.jpg");
    id2 = myTexture("bg.jpg");
    glEnable(GL_DEPTH_TEST);
    glutMainLoop();
}
3-5-2 用小畫家翻轉(180度)Diffuse.jpg圖檔
4-1 翻轉模型 將模型轉到正面
#include <opencv/highgui.h> 
#include <opencv/cv.h>
#include <GL/glut.h>
#include "glm.h"
GLMmodel* pmodel = NULL;
void
drawmodel(void)
{
    if (!pmodel) {
pmodel = glmReadOBJ("Gundam.obj");
if (!pmodel) exit(0);
glmUnitize(pmodel);
glmFacetNormals(pmodel);
glmVertexNormals(pmodel, 90.0);
    }

    glmDraw(pmodel, GLM_SMOOTH | GLM_TEXTURE);
}
GLuint id1, id2; 
int myTexture(char * filename)
{
    IplImage * img = cvLoadImage(filename); 
    cvCvtColor(img,img, CV_BGR2RGB); 
    glEnable(GL_TEXTURE_2D);
    GLuint id;
    glGenTextures(1, &id); 
    glBindTexture(GL_TEXTURE_2D, id); 
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);
    return id;
}
float angle=180;
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glBindTexture(GL_TEXTURE_2D, id1);
    glPushMatrix();
        glRotatef(angle,0,1,0);
    drawmodel();///glutSolidTeapot(0.3);
    glPopMatrix();

    glBindTexture(GL_TEXTURE_2D, id2);
    glBegin(GL_POLYGON);
        glTexCoord2f( 0, 0 ); glVertex2f( -1, -1 );
        glTexCoord2f( 0, 1 ); glVertex2f( -1, +1 );
        glTexCoord2f( 1, 1 ); glVertex2f( +1, +1 );
        glTexCoord2f( 1, 0 ); glVertex2f( +1, -1 );
    glEnd();
    glutSwapBuffers();
}
int main(int argc, char** argv)
{
    glutInit( &argc, argv );
    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH );
    glutCreateWindow(" Week13 ");
    glutDisplayFunc(display);

    id1 = myTexture("Diffuse.jpg");
    id2 = myTexture("bg.jpg");
    glEnable(GL_DEPTH_TEST);
    glutMainLoop();
}











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